{"instruction": "You are an expert in relationship extraction. Please extract relationship triples that match the schema definition from the input. Return an empty list for relationships that do not exist. Please respond in the format of a JSON string.", "schema": ["message topic", "member collection", "component whole", "product producer"], "input": "get on board before the train leaves the station ."}
{"message topic": [], "member collection": [], "component whole": [], "product producer": []}